Yaskawa FSP Amplifier - Manual (Page 267)

FSP Amplifier User’s Manual Chapter 9: Inspection, Maintenance, and Troubleshooting
9-2
9.1. FSP Amplifier Inspection and Maintenance
This section describes the basic inspections and maintenance of servomotors and
servo amplifiers and the procedures for replacing the battery for absolute
encoders.
9.1.1. Servomotor Inspection
For inspection and maintenance of servomotors, follow the simple, daily
inspection procedures in the following table.
The AC servomotors are brushless. Simple, daily inspection is sufficient
under most conditions. The inspection and maintenance frequencies in the
table are only guidelines. Increase or decrease the frequency to suit the
operating conditions and environment.
IMPORTANT
• During inspection and maintenance, do not disassemble the servomotor.
If disassembly of the servomotor is required, contact Yaskawa.
Servomotor Inspection
Action or Problem Frequency Procedure Comments
Vibration and Noise Daily Touch and listen.
Levels higher than
normal?
Exterior Dirt
According to degree of
contamination Clean with cloth or
compressed air.
—
Insulation
Resistance
Measurement
At least every year
Disconnect servo amplifier
and test insulation
resistance at 500 V. Must
exceed 10 MΩ*
Contact Yaskawa if the
insulation resistance is
below 10 MΩ
Oil Seal
Replacement At least every 5000
hours
Remove servomotor from
machine and replace oil
seal.
Applies only to motors with
oil seals.
Servomotor
Overhaul At least every 20000
hours or 5 years
Contact YEA
The user should not
disassemble and clean the
servomotor.
* Measure across the servomotor FG and the U-phase, V-phase, or W-phase power line